This directory contains a number of tests to ensure test running infrastructure is operating correctly: * The tests in assumptions/ are designed to test UA assumptions documented in [assumptions.md](/docs/_writing-tests/assumptions.md). * The tests in server/ are designed to test the WPT server configuration * The tests in expected-fail/ should all fail. To update the expectations stored in metadata/, you want to use the `wpt` tool with an invocation such as `./wpt update-expectations --metadata infrastructure/metadata --manifest MANIFEST.json [wptreport.json]` with one or more wptreport.json files.